Toyota MR2 Message Board - View Single Post - GZE swap, running rich and problems with idol.

Krimzen · 02-10-2009, 06:48 PM

Whats up guys, This may take a while to explain bc I need to list the parts I have replaced in the car and some of the other things I have done to it. Any help with this project would be greatly appreciated.

1988 Mr2 (n/a)

engine swapped with a 4agze (bought the engine, computer, wiring harness and (C52 manual trans).

I did not have a body harness. I used my stock wires when I transplanted it in my 88 N/A.

I had the engine and head rebuilt by a professional,

trans rebuilt by a professional.

Now for the stuff the pertains to my problem. I will only list the aftermarket parts I replaced that are relative to the issue at hand.

HKS Cams (264 duration, 8 mm lift)

Fidanza adj. cam gears

Cylinder head was milled

HKS mega flow air system

Venom injectors (10% more) I know, they suck from what I hear.

Stock fuel pump. (tried Venom, went bad shortly)

Super coil (accel)

Fidanza aluminum flywheel

Large Boost Junkey Crank Pulley

Cybermax huge tube header

Full HKS exhaust, cat eliminated

The car runs fine at 5000 RPS's. (Crazy powerful)

It idols like there is a giant air bubble in my coolant. I have bleed it many times and it still continues to reverberate the idol. The idol goes from about 2000 to 2500 and then back to 2000, over and over and a fairly quick rythym. This only happens after it warms up a bit. When it's cold it idols at 2000-3000 rpms's. Higher that it should on cold start.

It smells like a very rich whiff of gasoline. I refuse to run it for too long bc I do not want to damage the pistons.

My timing is set to zero on the factory marks. I have checked it a million times. On a test drive it is not too bad at a higher RPM level. Still, it seems like it should be running better.

What if bc of my cams, being at a diff. duration, would make it to where my old factory marks do not apply, (as far as the cam position).???? Would this cause symptoms at idol like my car has.

What if my 80's Computer system is not capable of controlling the new sorroundings. Its could be like putting a ten year olds' brain into Michael Jordan and telling him to slam dunk....

Also, my engine light remains off during this whole process.

So I am thinking of going with the Greddy EMan system. Its a bit expensive but I am ready to give up.

Id appreciate any help that you guys have to offer.

Jerry P. (Atlanta, Ga)

02-10-2009, 06:48 PM	#1 (permalink)
Krimzen No Skills Join Date: May 2005 Location: Marietta, GA Posts: 65 Thanks: 8 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	GZE swap, running rich and problems with idol. Whats up guys, This may take a while to explain bc I need to list the parts I have replaced in the car and some of the other things I have done to it. Any help with this project would be greatly appreciated. 1988 Mr2 (n/a) engine swapped with a 4agze (bought the engine, computer, wiring harness and (C52 manual trans). I did not have a body harness. I used my stock wires when I transplanted it in my 88 N/A. I had the engine and head rebuilt by a professional, trans rebuilt by a professional. Now for the stuff the pertains to my problem. I will only list the aftermarket parts I replaced that are relative to the issue at hand. HKS Cams (264 duration, 8 mm lift) Fidanza adj. cam gears Cylinder head was milled HKS mega flow air system Venom injectors (10% more) I know, they suck from what I hear. Stock fuel pump. (tried Venom, went bad shortly) Super coil (accel) Fidanza aluminum flywheel Large Boost Junkey Crank Pulley Cybermax huge tube header Full HKS exhaust, cat eliminated The car runs fine at 5000 RPS's. (Crazy powerful) It idols like there is a giant air bubble in my coolant. I have bleed it many times and it still continues to reverberate the idol. The idol goes from about 2000 to 2500 and then back to 2000, over and over and a fairly quick rythym. This only happens after it warms up a bit. When it's cold it idols at 2000-3000 rpms's. Higher that it should on cold start. It smells like a very rich whiff of gasoline. I refuse to run it for too long bc I do not want to damage the pistons. My timing is set to zero on the factory marks. I have checked it a million times. On a test drive it is not too bad at a higher RPM level. Still, it seems like it should be running better. What if bc of my cams, being at a diff. duration, would make it to where my old factory marks do not apply, (as far as the cam position).???? Would this cause symptoms at idol like my car has. What if my 80's Computer system is not capable of controlling the new sorroundings. Its could be like putting a ten year olds' brain into Michael Jordan and telling him to slam dunk.... Also, my engine light remains off during this whole process. So I am thinking of going with the Greddy EMan system. Its a bit expensive but I am ready to give up. Id appreciate any help that you guys have to offer. Jerry P. (Atlanta, Ga) Last edited by Krimzen; 02-10-2009 at 06:55 PM..